provided. From the very beginning, this supposed offensive operation, turned into a defensive operation for the 3rd Brigade ending in a siege of Firebase Ripcord 1-23 Jul 1970 by the entire 324B Division, NVA, supported by 304B Division, NVA. Col Harrison took command of the 3rd Brigade on 23 Jun and during the first 69 days of his command, the 3rd Bde conducted: 16 battalion sized combat air assaults to multiple landing zones. 15 battalion sized aerial extractions from multiple pickup zones. Several new Fire Support Bases were opened and a number of older bases were closed. In an interview with Maj Gen Chu Phong Doi, Commander of the 324B Division in 2004 in Cao Bang, Vietnam, he admitted to then Maj Gen (Ret) Harrison that he had suffered the loss of eight of his nine infantry battalions. Thousands of his support troops were also lost. American losses, though comparatively small in numbers, were heavy with 250 KIA from 12 March to 23 July. The battle was marked by truly extraordinary bravery in combat with the award of five Distinguished Service Crosses and three awards of the Medal of Honor during this campaign to troopers and leaders of the 3rd Brigade. After completion of his assignment with the 3rd Brigade, he became the Senior Advisor to the commanding general of the ARVN 1st Infantry Division, during the incursions into Laos for Operation Lam Son 719. He worked closely with Vietnamese combat commanders to develop airmobile skills and experience as the war transitioned to a totally Vietnamese struggle. In his two combat tours in Vietnam, Harrison flew hundreds of helicopter missions, accumulating a total of 1842 combat flying hours out of a total military flight history of over 5,000 hours. Following that assignment, Harrison directed the (Triple Capacity) testing at Fort Hood, Texas which resulted in the demise of the TRICAP Division concept and the subsequent formation of the 6th Cavalry Brigade (Air Combat). Upon promotion to brigadier general in July 1973, for three years he was the academic and administrative head of the Command and General Staff College. One of his lasting contributions at the College was to consolidate all Training and Doctrine Command (TRADOC) constructive simulations and create a family of technologically based realistic battle simulations from platoon through corps level. From August 1976 to August 1977, Harrison was the Deputy Commanding General of Fort Rucker, Alabama and of